CN205881980U - Top cap subassembly and secondary cell - Google Patents
Top cap subassembly and secondary cell Download PDFInfo
- Publication number
- CN205881980U CN205881980U CN201620866263.5U CN201620866263U CN205881980U CN 205881980 U CN205881980 U CN 205881980U CN 201620866263 U CN201620866263 U CN 201620866263U CN 205881980 U CN205881980 U CN 205881980U
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- CN
- China
- Prior art keywords
- nail
- injection hole
- liquid injection
- cap assembly
- main part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a top cap subassembly and secondary cell, the top cap subassembly includes: the top cap piece is provided with and annotates the liquid hole, mould adhesive nail, insert and annotate the liquid hole in order to block up notes liquid hole, and sealed nail, be located the top of moulding adhesive nail and annotating the liquid hole to weld in the top cap piece with the sealed liquid hole of annotating. Sealed nail has: the main part welds in the top cap piece with the sealed liquid hole of annotating, and the boss, from the main part to moulding that adhesive nail extends and with to mould adhesive nail spaced apart. Work as the basis the utility model discloses a secondary cell is applied to to the top cap subassembly, just examines time measuring in the gas tightness of carrying out secondary cell, can crowd compacting downwards through manual work or machine and seal the main part of nail so that adhesive nail is moulded to downward extrusion of main part drive boss, breaks away from until moulding adhesive nail and annotating the liquid hole. When the seal nature that detects sealed nail, effectively got rid of and moulded the interference of adhesive nail to seal nature like this to realized more completely, more reliable gas tightness detects, and then has guaranteed the gas tightness of secondary cell in long -term use.
Description
Technical field
This utility model relates to field of batteries, particularly relates to a kind of cap assembly and secondary cell.
Background technology
Current driving force battery battery core needs to seal with sealed plasthetic nail after fluid injection evacuation, then will seal aluminium nail
It is welded on top cover (as depicted in figs. 1 and 2).Owing to sealed plasthetic nail is made frequently with polypropylene (PP) material, electrokinetic cell
Before shipment final helium inspection during, sealed plasthetic nail sealing function be probably intact, but in use along with
Time is aging, and sealed plasthetic nail may lose sealing function, and at this time sealing at liquid injection hole just relies on sealed aluminum nail welding
Reliability.
The general process of finished product battery core helium inspection is: can inject helium (battery core inside battery core before sealed plasthetic nail seals
Air pressure inside ＜ 0.12MPa), sealed plasthetic nail, welded seal aluminium nail are installed the most successively, these operations are electric by finished product after completing
Core is put into vacuum environment and is carried out helium inspection.Assume that the part air-tightness at now other positions of battery core is good, and sealed plasthetic nail is close
Envelope function is intact and sealed aluminum nail welding air-tightness is bad, then cannot detect helium leakage when helium is examined, thus cannot get rid of close
The envelope bad battery core of aluminium nail welding airtightness, and during life-time service, sealed plasthetic nail is probably due to vibrations, aging etc.
Reason loses air-tightness, and the sealing aluminium nail that now welding airtightness is bad just cannot play sealing function, and battery core is leaked gas.
Utility model content
In view of problem present in background technology, the purpose of this utility model is to provide a kind of cap assembly and secondary electricity
Pond, when cap assembly is applied to secondary cell, when the air-leakage test of secondary cell, it can realize more complete, more reliable
Air-leakage test, thus ensure that secondary cell air-tightness during life-time service.
To achieve these goals, in first aspect, this utility model provides a kind of cap assembly, comprising: top cover
Sheet, is provided with liquid injection hole；Plastic stud, inserts liquid injection hole to block liquid injection hole；And seal nail, it is positioned at plastic stud and liquid injection hole
Top, and it is welded in coping plate to seal liquid injection hole.Wherein, seal nail and have: main part, be welded in coping plate to seal fluid injection
Hole；And boss, extend and spaced apart with plastic stud to plastic stud from main part.
To achieve these goals, in second aspect, this utility model provides a kind of secondary cell, it include battery core and
Housing the housing of battery core, and the cap assembly described in this utility model first aspect, wherein coping plate is hermetically connected with the shell.
The beneficial effects of the utility model are as follows:
According in cap assembly of the present utility model, plastic stud inserts in the liquid injection hole on coping plate, and is positioned at plastic cement
The sealing tack welding of the top of nail and liquid injection hole is connected to coping plate, thus completes the sealing of liquid injection hole.When cap assembly is applied to two
Primary cell, and when carrying out the air-leakage test of secondary cell, can be pressed down against sealing the main body of nail by artificial or machine
Portion is so that main part drives boss to be pressed down against plastic stud, until plastic stud departs from liquid injection hole.So seal nail in detection
During welded seal, effectively eliminate the plastic stud interference to welding sealing, it is achieved thereby that more complete, more reliable is airtight
Property detection, and then ensure that secondary cell air-tightness during life-time service.
Accompanying drawing explanation
Fig. 1 is the sectional view of cap assembly of the prior art；
Fig. 2 is the enlarged drawing of the dotted box portion in Fig. 1；
Fig. 3 is the sectional view according to cap assembly of the present utility model；
Fig. 4 is the enlarged drawing of the dotted box portion in Fig. 3；
Fig. 5 shows the plastic stud of cap assembly and seals nail change in location figure in seal process, and wherein dotted line is
Sealing state during nail welding, solid line is that after welding, state when pressing down plastic stud is followed closely in sealing；
Fig. 6 is the sectional view according to secondary cell of the present utility model, wherein the liquid injection hole unsealing of cap assembly.
Wherein, description of reference numerals is as follows:
1 cap assembly 14 liquid injection hole
11 coping plate 15 recesses
12 plastic stud 151 step surfaces
13 seal nail 2 battery cores
131 main part 3 housings
132 boss
Detailed description of the invention
Describe in detail with reference to the accompanying drawings according to cap assembly of the present utility model and secondary cell.
First the cap assembly 1 of this utility model first aspect is described.
With reference to Fig. 3 to Fig. 6, include according to cap assembly 1 of the present utility model: coping plate 11, be provided with liquid injection hole 14；Mould
Glue nail 12, inserts liquid injection hole 14 to block liquid injection hole 14；And seal nail 13, it is positioned at plastic stud 12 and the top of liquid injection hole 14,
And it is welded in coping plate 11 to seal liquid injection hole 14.
Wherein, seal nail 13 and have: main part 131, be welded in coping plate 11 to seal liquid injection hole 14；And boss 132,
Extend and spaced apart with plastic stud 12 to plastic stud 12 from main part 131.
According in cap assembly 1 of the present utility model, plastic stud 12 inserts in the liquid injection hole 14 on coping plate 11, and position
Sealing nail 13 in plastic stud 12 and the top of liquid injection hole 14 is welded in coping plate 11, thus completes the sealing of liquid injection hole 14.When
Cap assembly 1 is applied to secondary cell, and when carrying out the air-leakage test of secondary cell, can pass through artificial or machine is downward
The main part 131 of crush seal nail 13 is so that main part 131 drives boss 132 to be pressed down against plastic stud 12, until plastic stud 12
Depart from liquid injection hole 14.So when detection seals the welded seal of nail 13, effectively eliminate plastic stud 12 to welded seal
The interference of property, it is achieved thereby that more complete, more reliable air-leakage test, and then ensure that secondary cell is in life-time service process
In air-tightness.
According in cap assembly 1 of the present utility model, sealing nail 13 can be made up of elastomeric material.It is subject to when sealing nail 13
During extruding, the main part 131 sealing nail 13 can produce certain deformation, and then promotes boss 132 to be pressed down against plastic stud 12.This
Outward, based on sealing the elasticity following closely 13, seal nail 13 and be hardly damaged when being squeezed.
According in cap assembly 1 of the present utility model, in one embodiment, with reference to Fig. 3 to Fig. 5, boss 132 can be formed
Centre in the main part 131 sealing nail 13.
In one embodiment, with reference to Fig. 3 to Fig. 5, main part 131 can be arch.
According in cap assembly 1 of the present utility model, the height of boss 132 is not less than the degree of depth of liquid injection hole 14.So,
When being pressed down against sealing nail 13, just can ensure that plastic stud 12 can be extruded liquid injection hole 14 by boss 132 completely that seal nail 13,
Thus when carrying out the air-leakage test of secondary cell, get rid of the plastic stud 12 interference to welding sealing.
According in cap assembly 1 of the present utility model, the boss 132 span along the length direction of coping plate 11 is less than
The diameter of liquid injection hole 14, thus after plastic stud 12 is extruded liquid injection hole 14 by boss 132 completely that seal nail 13, in secondary cell
Detected gas can flow to seal nail 13 and the weld zone of coping plate 11 via the gap between boss 132 and liquid injection hole 14
Territory, and then realize sealing the detection of the welded seal of nail 13 (when not detecting that in the outside of secondary cell detected gas is overflow
Go out and then prove that the welded seal sealing nail 13 is good, otherwise then prove that the welded seal sealing nail 13 is bad).
In one embodiment, coping plate 11 and sealing nail 13 all can be made up of metal material.Further, sealing nail 13 can
Made of aluminum, coping plate 11 also can be made of aluminum.
According in cap assembly 1 of the present utility model, plastic stud 12 can be made up of polypropylene PP.
According in cap assembly 1 of the present utility model, with reference to Fig. 3 to Fig. 6, coping plate 11 is also provided with being positioned at fluid injection
Recess 15 above hole 14, liquid injection hole 14 connects with recess 15, and the main part 131 sealing nail 13 covers recess 15.Further,
The recess 15 of coping plate 11 can have step surface 151, and the periphery of the main part 131 sealing nail 13 is welded on step surface 151.Change
Sentence is talked about, and the step surface 151 of recess 15 is the welding region sealing nail 13 with coping plate 11, the detected gas in secondary cell
Can flow at the step surface 151 of recess 15 via the gap between boss 132 and liquid injection hole 14, and then realize sealing nail 13
The detection of welded seal.
Secondly the secondary cell of this utility model second aspect is described.
Include battery core 2 according to secondary cell of the present utility model and house the housing 3 of battery core 2, and this utility model the
Cap assembly 1 described in Yi Fangmian, wherein coping plate 11 is tightly connected with housing 3.
According in secondary cell of the present utility model, cap assembly 1 includes coping plate 11, plastic stud 12, seals nail 13
And liquid injection hole 14.When carrying out the air-leakage test of secondary cell, can be pressed down against sealing nail 13 by artificial or machine
Main part 131 so that main part 131 drives boss 132 to be pressed down against plastic stud 12, until plastic stud 12 takes off with liquid injection hole 14
From.So when detection seals the welded seal of nail 13, effectively eliminate the plastic stud 12 interference to welding sealing, thus
Achieve more complete, more reliable air-leakage test, and then ensure that secondary cell air-tightness during life-time service.
Finally remark additionally the air-tightness detection method of secondary cell of the present utility model.
The air-tightness detection method of secondary cell of the present utility model is for detecting the secondary of this utility model second aspect
The air-tightness of battery, it includes step: S1, battery core 2 is contained in housing 3, and cap assembly 1 and housing 3 are sealed assembling；
S2, is injected the electrolyte in housing 3 by liquid injection hole 14；S3, by liquid injection hole 14 evacuation internal to housing 3, injects afterwards
Detected gas, then inserts liquid injection hole 14 to block liquid injection hole 14 by plastic stud 12；S4, welded seal nail 13 is in coping plate 11
On；S5, applies external force, so that main part 131 drives boss 132 to move also to plastic stud 12 to the main part 131 sealing nail 13
Promote plastic stud 12 so that plastic stud 12 is deviate from liquid injection hole 14 and fallen in housing 3；And S6, utilize the detection not shown inspection of device
Survey the welding airtightness sealed between nail 13 and coping plate 11.
According to the air-tightness detection method of secondary cell of the present utility model, in one embodiment, detected gas can be helium
Gas.
In the air-tightness detection method according to secondary cell of the present utility model, after injecting detected gas, housing 3 is internal
Air pressure less than 0.12MPa.
Claims (10)
1. a cap assembly (1), including:
Coping plate (11), is provided with liquid injection hole (14)；
Plastic stud (12), inserts liquid injection hole (14) to block liquid injection hole (14)；And
Seal nail (13), be positioned at plastic stud (12) and the top of liquid injection hole (14), and be welded in coping plate (11) to seal fluid injection
Hole (14)；
It is characterized in that,
Seal nail (13) to have:
Main part (131), is welded in coping plate (11) to seal liquid injection hole (14)；And
Boss (132), extends and spaced apart with plastic stud (12) to plastic stud (12) from main part (131).
Cap assembly the most according to claim 1 (1), it is characterised in that boss (132) is formed at the master sealing nail (13)
The centre of body (131).
Cap assembly the most according to claim 1 (1), it is characterised in that main part (131) is arch.
Cap assembly the most according to claim 1 (1), it is characterised in that the height of boss (132) is not less than liquid injection hole
(14) the degree of depth.
Cap assembly the most according to claim 1 (1), it is characterised in that boss (132) is along the length side of coping plate (11)
Span upwards is less than the diameter of liquid injection hole (14).
Cap assembly the most according to claim 1 (1), it is characterised in that coping plate (11) and sealing nail (13) are by gold
Genus is made.
Cap assembly the most according to claim 1 (1), it is characterised in that plastic stud (12) is made up of polypropylene.
Cap assembly the most according to claim 1 (1), it is characterised in that coping plate (11) is additionally provided with and is positioned at liquid injection hole
(14) recess (15) of top, liquid injection hole (14) connects with recess (15), and the main part (131) sealing nail (13) covers recess
(15)。
Cap assembly the most according to claim 8 (1), it is characterised in that the recess (15) of coping plate (11) has step
Face (151), the periphery of the main part (131) sealing nail (13) is welded on step surface (151).
10. a secondary cell, including battery core (2) and the housing (3) of collecting battery core (2), it is characterised in that described secondary cell
Also including the cap assembly (1) according to any one of claim 1-9, wherein coping plate (11) is tightly connected with housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620866263.5U CN205881980U (en) | 2016-08-11 | 2016-08-11 | Top cap subassembly and secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620866263.5U CN205881980U (en) | 2016-08-11 | 2016-08-11 | Top cap subassembly and secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205881980U true CN205881980U (en) | 2017-01-11 |
Family
ID=57703732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620866263.5U Active CN205881980U (en) | 2016-08-11 | 2016-08-11 | Top cap subassembly and secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205881980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199393A (en) * | 2017-06-02 | 2017-09-26 | 深圳吉阳智能科技有限公司 | A kind of battery liquid-filling mouthful sealing nail welding equipment |
| CN110581233A (en) * | 2018-06-08 | 2019-12-17 | 银隆新能源股份有限公司 | Sealing component and sealing method of square aluminum shell lithium ion battery |
-
2016
- 2016-08-11 CN CN201620866263.5U patent/CN205881980U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107199393A (en) * | 2017-06-02 | 2017-09-26 | 深圳吉阳智能科技有限公司 | A kind of battery liquid-filling mouthful sealing nail welding equipment |
| CN110581233A (en) * | 2018-06-08 | 2019-12-17 | 银隆新能源股份有限公司 | Sealing component and sealing method of square aluminum shell lithium ion battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |